In 2026, the Australian Tax Office (ATO) is no longer "lenient" with late lodgments. Automated "Failure to Lodge" (FTL) penalties are issued as soon as a deadline is missed. For many small business owners, missing a single BAS date can result in a fine of over $600. Here's your mandatory compliance calendar for the 2026 financial year.
Most small businesses in Australia lodge their Business Activity Statement (BAS) on a quarterly basis. The standard due dates for 2026 are:
If your business turnover is over $20 million, or you voluntarily choose to lodge monthly to manage cash flow, your BAS is due by the 21st day of every month. For example, your February 2026 BAS is due on March 21, 2026.
One of the largest benefits of working with a professional tax agent like PrepMyBook is the **lodgment extension.** In most cases, the ATO grants registered agents an extra 4 weeks to lodge and pay your quarterly BAS. This means your October 28 deadline would move to November 25, giving your business 30 days of additional cash flow breathing room.
⚠️ Note: Even if you can't afford to pay your BAS, you should always lodge on time. Lodging on time avoids the late filing penalty; you can then arrange a payment plan for the debt itself.
Don't let a simple calendar error cost your business hundreds of dollars in fines. At PrepMyBook, we proactively notify our clients 14 days before every BAS deadline, ensuring that the books are reconciled and the numbers are audit-proof well in advance. Let's make 2026 your most compliant year yet.
Our tax agents can handle your BAS lodgment and securing you that extra month of cash flow. Let's take the stress out of the 28th of the month.
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